Finding the Fourth Proportional to 2,631.30, 3,946.90 and 683.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.30 : 3,946.90 = 683.46 : x
2. Step 2: Convert to fraction form
   2,631.30/3,946.90 = 683.46/x
3. Step 3: Cross multiply
   2,631.30x = 3,946.90 × 683.46
4. Step 4: Simplify right side
   2,631.30x = 2,697,548.27
5. Step 5: Solve for x
   x = 2,697,548.27/2,631.30
6. Step 6: Final answer
   x = 1,025.18